Improvement in plow-clevises



J. KEEGH.

Plow-Glevis Pat'epted May '5, 1863.

M6 OM Invenfior:

UNITED STATES PATENT ()FFICE.

JOSEPH KEEGH, OF WATERLOO, NEW YORK.

IMPROVEMENT IN PLOW-CLEVISES.

Specification forming part of Letters Patent No. 38,394, dated May 5, 1863.

To all whom it may camera Beitknown that I, J osnrn Knncn, of Waterloo, in the county of Seneca and State of New York, have invented a new and Improved Mode of Oonstructin g Plow-Beams; and I do hereby declare that the following is a full and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

Figure 1 is a side elevation of a portion of a plow-beam with my improvements applied for the purpose of producing the center draft; Figs. 2 and 3, obverse and reverse views, respectively, of the intermediate or dial plate detached; Fig. 4, a view of the index or adjusting plate detached; Fig. 5, a plan of the end of the plow-beam with the parts shown in Fig. 1 detached, and with a clevis applied in their place.

Like letters of reference indicate corresponding parts in all the figures.

It is the object of my invention to produce such an arrangement that the beam of a plow may be adapted to the use either of the ordinary clevis or the parts which constitute what is generally termed the center draft, thus combining in a single implement the capacities which in ordinary devices belong to two. By this arrangement the plow is adapted to any kind or condition of soil, and also to the preferences of the user, some prefering the clevis and others the center draft, which is supposed to create less strain on the beam and to Work more easily and regularly.

The beam A may be of ordinary shape and construction, preferably made of iron, and attached to the mold-board in the usual manner At its forward or draft end is made a set of transverse ordinary cogs or teeth, a a, Fig. 1, that are concentric with hole b, through which passes the bolt of the clevis B. This clevis is of the ordinary shape, adjusting vertically by its edge fitting between the cogs of the beam to produce a greater or. less depth of cut, and provided with lateral eyes or holes 0 c in its front to produce the necessary adjustment for making the plow land more or less, as clearly represented in Fig. 5.

To produce the center-draft arrangement, the clevis is removed and the following parts applied: A plate, 0, that I denominate the dial-plate, engages with the cogs of the beam, having similar cogs, d d, for the purpose, as represented. This plate is made of iron, of

suitable thickness, and of the shape indicated in Figs. 2 and 3, having a central, circular,

enlarged portion, 0, and plane vertical projectionsff at the top and bottom. Onthe opposite or reverse side from the cogs d d the circular portion 6 is provided with a suitable number of radial concentric teeth, 9 {1, Fig. 3, with which engage teeth h h of an elongated plate, D, thatl term the index-plate. These teeth h are situated on opposite sides of a central vertical slot, 2', of suitable length to allow the necessary adjustment, and for the purpose of fitting closely and properly between the radial teeth of the dial-plate; and also for allowing the index-plate to be adjusted laterally, or with its ends on one side of the central vertical plane, said teeth h h are made of diamond shape, as clearly represented in Fig. 5. These parts are secured to the end of the beam by a bolt, 70, passing throughthe slot i of the index-plate and through a central hole, t, in the dial-plate. In the lower end of the index-plate is a hole or passage, m, Fig. 5, through which passes the draft-bar G, having the ordinary hook at its front end, and extending backward and secured to a lug, n, at a suitable position on the beam. I

The advantages of the arrangement above described are apparent. The simple clevis can be used at all times desired; or, by removing it, the other parts can be applied without trouble, thus producing a center-draft plow of the same implement, the whole being as efiective as two distinct and independent plows, and thus sav ing much extra expense to'those who desire to possess both. By the peculiar shape of the dial-plate it matters not which end of it is applied, as the efi'ect is the same. The indexplate can be adjusted up or down in a vertical line for the plow to cut deeper or shallower; or the ends may be adjusted to any desired angle laterally to make it land more or less.

What I claim as my invention, and desire to secure by Letters Patent, is-

The dial-plate (l, provided with cogs d d on one side, engaging with the cogs a a of the beam, and with concentric radial teeth g g on the other side, engaging with the index plate D, that sustains and adjusts the draft-rod, substantially as and for the purposes herein set forth.

Witnesses: JOSEPH KEEOH.

H. F. GUsTIN, FREDERIG L. MANNING. 

